The unconscious patient with a closed head injury is on mechanical ventilation. To improve brain perfusion through increased blood pressure, the carbon dioxide (CO2) should be maintained at what level?
a. 10 to 15 mm Hg
b. 15 to 20 mm Hg
c. 20 to 25 mm Hg
d. 25 to 30 mm Hg
D
The CO2 level is set to be maintained at 25 to 30 mm Hg to create vascular constriction, raise blood pressure, and perfuse the cerebrum.
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